* es.po: Update.
[official-gcc.git] / libsanitizer / sanitizer_common / sanitizer_linux.h
blob895bfc18195c4f534ec0c83c6d9a4d3001b77d97
1 //===-- sanitizer_linux.h ---------------------------------------*- C++ -*-===//
2 //
3 // This file is distributed under the University of Illinois Open Source
4 // License. See LICENSE.TXT for details.
5 //
6 //===----------------------------------------------------------------------===//
7 //
8 // Linux-specific syscall wrappers and classes.
9 //
10 //===----------------------------------------------------------------------===//
11 #ifndef SANITIZER_LINUX_H
12 #define SANITIZER_LINUX_H
14 #include "sanitizer_platform.h"
15 #if SANITIZER_FREEBSD || SANITIZER_LINUX
16 #include "sanitizer_common.h"
17 #include "sanitizer_internal_defs.h"
18 #include "sanitizer_posix.h"
19 #include "sanitizer_platform_limits_posix.h"
21 struct link_map; // Opaque type returned by dlopen().
22 struct sigaltstack;
24 namespace __sanitizer {
25 // Dirent structure for getdents(). Note that this structure is different from
26 // the one in <dirent.h>, which is used by readdir().
27 struct linux_dirent;
29 // Syscall wrappers.
30 uptr internal_getdents(fd_t fd, struct linux_dirent *dirp, unsigned int count);
31 uptr internal_sigaltstack(const struct sigaltstack* ss,
32 struct sigaltstack* oss);
33 uptr internal_sigprocmask(int how, __sanitizer_sigset_t *set,
34 __sanitizer_sigset_t *oldset);
36 // Linux-only syscalls.
37 #if SANITIZER_LINUX
38 uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5);
39 // Used only by sanitizer_stoptheworld. Signal handlers that are actually used
40 // (like the process-wide error reporting SEGV handler) must use
41 // internal_sigaction instead.
42 int internal_sigaction_norestorer(int signum, const void *act, void *oldact);
43 #if (defined(__x86_64__) || SANITIZER_MIPS64) && !SANITIZER_GO
44 // Uses a raw system call to avoid interceptors.
45 int internal_sigaction_syscall(int signum, const void *act, void *oldact);
46 #endif
47 void internal_sigdelset(__sanitizer_sigset_t *set, int signum);
48 #if defined(__x86_64__) || defined(__mips__) || defined(__aarch64__) \
49 || defined(__powerpc64__) || defined(__s390__)
50 uptr internal_clone(int (*fn)(void *), void *child_stack, int flags, void *arg,
51 int *parent_tidptr, void *newtls, int *child_tidptr);
52 #endif
53 #endif // SANITIZER_LINUX
55 // This class reads thread IDs from /proc/<pid>/task using only syscalls.
56 class ThreadLister {
57 public:
58 explicit ThreadLister(int pid);
59 ~ThreadLister();
60 // GetNextTID returns -1 if the list of threads is exhausted, or if there has
61 // been an error.
62 int GetNextTID();
63 void Reset();
64 bool error();
66 private:
67 bool GetDirectoryEntries();
69 int pid_;
70 int descriptor_;
71 InternalScopedBuffer<char> buffer_;
72 bool error_;
73 struct linux_dirent* entry_;
74 int bytes_read_;
77 // Exposed for testing.
78 uptr ThreadDescriptorSize();
79 uptr ThreadSelf();
80 uptr ThreadSelfOffset();
82 // Matches a library's file name against a base name (stripping path and version
83 // information).
84 bool LibraryNameIs(const char *full_name, const char *base_name);
86 // Call cb for each region mapped by map.
87 void ForEachMappedRegion(link_map *map, void (*cb)(const void *, uptr));
88 } // namespace __sanitizer
90 #endif // SANITIZER_FREEBSD || SANITIZER_LINUX
91 #endif // SANITIZER_LINUX_H